Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/03—Non-macromolecular organic compounds
  • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
  • D21H17/10—Phosphorus-containing compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0208—Tissues; Wipes; Patches
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
  • A61K8/342—Alcohols having more than seven atoms in an unbroken chain
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/34—Alcohols
  • A61K8/345—Alcohols containing more than one hydroxy group
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
  • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/463—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/55—Phosphorus compounds
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/03—Non-macromolecular organic compounds
  • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
  • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/03—Non-macromolecular organic compounds
  • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
  • D21H17/09—Sulfur-containing compounds
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/03—Non-macromolecular organic compounds
  • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
  • D21H17/14—Carboxylic acids; Derivatives thereof
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
  • D21H21/22—Agents rendering paper porous, absorbent or bulky
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
  • D21H21/22—Agents rendering paper porous, absorbent or bulky
  • D21H21/24—Surfactants
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
  • D21H27/002—Tissue paper; Absorbent paper
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
  • D21H27/002—Tissue paper; Absorbent paper
  • D21H27/004—Tissue paper; Absorbent paper characterised by specific parameters
  • D21H27/005—Tissue paper; Absorbent paper characterised by specific parameters relating to physical or mechanical properties, e.g. tensile strength, stretch, softness
  • D21H27/007—Tissue paper; Absorbent paper characterised by specific parameters relating to physical or mechanical properties, e.g. tensile strength, stretch, softness relating to absorbency, e.g. amount or rate of water absorption, optionally in combination with other parameters relating to physical or mechanical properties
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
  • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
  • A47K10/16—Paper towels; Toilet paper; Holders therefor

Definitions

• the present invention relates to a paper treatment agent.
• a lotion tissue which is a typical product in the above product, is a moisturizing tissue made by applying a lotion agent as a paper treatment agent onto tissue base paper.
• the lotion tissue is moist, and has a texture of softness and largely-improved sense of use, and therefore, the lotion tissue has been widespread as a seasonal product in winter for hay fever, a measure for influenza, and the like, and has been expanded from for use mainly for blowing the nose to for daily use, and has been becoming for year-round use.
• a polyhydric alcohol such as glycerin, or polyethylene glycol (PEG), in particular, glycerin that is a moisturizer being inexpensive and excellent in safety is used in many cases.
• the moisturizer By using the moisturizer, the hygroscopic property and moisture retaining property of paper are enhanced, and a soft and moist texture is imparted to the paper.
• a material texture felt by a person when touches a tissue and a texture of a tissue as a feel have a great effect on the sense of use of moisturizing tissues, and have become the most important quality for adding a value to the product.
• moisturizing tissues are used for blowing the nose in many cases, and it is desirable for a tissue to have a favorable texture when the tissue is pressed strongly against the skin as in the case of blowing the nose, in particular, to have a favorable slippery feeling, from the viewpoint of reducing the burden on the skin with a less irritating feel, and a reduction in the surface friction when pressure is applied on the tissue has been demanded.
• a lotion tissue is softened by taking moisture in the tissue with glycerin being a moisturizer, and by mixing a softening component into the tissue, and the softness of a moisturizing tissue is developed by the decrease in pulp/pulp hydrogen bonds due to the increase in the water content of coated paper.
• the water content taken into a tissue by a moisturizer depends on the humidity of the outer environment, and moisture is lost from a tissue under the environment of low humidity and hydrogen bonds between pulps are reconstructed, and therefore, paper becomes harder as compared with that under the environment of high humidity.
• a tissue absorbs excessively water under the environment of high humidity, and the paper strength is decreased.
• Patent Literature 1 a technique of mixing an oil substance and water-soluble wax together with a moisturizer into a paper treatment agent has been proposed.
• the technique stable retention of a tactile feeling such as smoothness has been attained, but there has been a problem that the water-soluble wax has high viscosity, impairs the fluidity and uniform application of an agent, and deteriorates the operability.
• Patent Literatures 2 to 4 a technique of mixing a sucrose fatty acid ester or a branched alcohol together with a moisturizer into a paper treatment agent has been proposed, and improvement of the softness and touch under the environment of low humidity has been attained.
• These bases have an advantage of being easily mixed into a moisturizer, and the softness can be somewhat retained even under the environment of low humidity, however, the effect has not been sufficiently exerted.
• the present invention is made in consideration of the above circumstances, and an object of the present invention is to provide a paper treatment agent in which a polyhydric alcohol has been mixed as a moisturizer, and with which paper having a favorable texture when the paper is pressed strongly against the skin as in the case of blowing the nose or the like and having low outer humidity environmental dependence of a texture and the sense of use is obtained.
• a paper treatment agent in which a straight chain alcohol or fatty acid, and an anionic surfactant have been used provides to pater a slippery feeling that is specifically developed when pressure is applied on the pater, suppresses the moisture absorption or the moisture desorption (hereinafter, may be abbreviated as absorption and desorption of moisture in some cases) even under the environment of high humidity or low humidity, and reduces the humidity environmental dependence of a texture of the pater, and thus the present inventors have completed the present invention.
• the paper treatment agent according to the present invention is a paper treatment agent containing a polyhydric alcohol (A) as a main component, and is characterized in that the paper treatment agent contains at least one component (B) selected from a straight chain alcohol and a straight chain fatty acid, and an anionic surfactant (C), and in a case where the paper treatment agent contains at least one component (B') selected from a branched alcohol and a branched fatty acid, a mass ratio (B'/B) of the component (B') to the component (B) is less than 1.
• paper which has a unique texture when the paper is pressed strongly against the skin as in the case of blowing the nose or the like, that is, a slippery feeling that is specifically developed when pressure is applied on the paper, suppresses the absorption and desorption of moisture even under the environment of high humidity or low humidity, and retains the moist feeling, and the softness, can be obtained.
• a polyhydric alcohol of component (A) is a moisturizer that enhances the hygroscopic property and moisture retaining property of paper, and imparts a moist feeling to the paper, and is a main component of the paper treatment agent.
• the expression "main component” means that a component (A) is mixed in the largest mass among the respective additive components that are raw materials for a paper treatment agent.
• the amount of the component (A) to be added is preferably 50% by mass or more, more preferably 70% by mass or more, furthermore preferably 75% by mass, and still more preferably 80% by mass or more, relative to the whole amount of raw materials for the paper treatment agent except for water.
• polyhydric alcohol of component (A) to be used in the present invention examples include glycerin, diglycerin, triglycerin, polyglycerin, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 1,3-butanediol, 1,4-butanediol, 1,2-pentanediol, 1,2-hexanediol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polyoxyethylene glycerin ether, isoprene glycol, pentaerythritol, and trimethylolpropane.
• sugar alcohols or saccharides may also be used.
• sugar alcohols include sorbitol, inositol, glucosyl trehalose, xylitol, erythritol, mannitol, lactitol, fructose, oligosaccharide alcohol, maltitol, reduced palatinose, reduced sugar syrup, and reduced starch hydrolysate.
• saccharides include fructose, glucose, lactose, xylose, psicose, maltose, starch syrup, oligosaccharide, maltose, trehalose, lactose, palatinit, sucrose, isomerized sugar syrup, isomalto-oligosaccharide, fructo-oligosaccharide, galacto-oligosaccharide, xylo-oligosaccharide, lactosucrose, soybean oligosaccharide, raffinose, stevia, licorice, saccharin, aspartame, acesulfame K, and sucralose. These may be used singly alone or in combination of two or more kinds thereof.
• glycerin is preferred.
• the proportion of the glycerin to the whole amount of moisturizer is preferably 80% by mass or more, and more preferably 90% by mass or more.
• the moisturizer to be used in combination with the glycerin for example, sorbitol or the like can be mentioned.
• a component other than the polyhydric alcohol of component (A) may also be used in combination with the component (A).
• a moisturizer for example, amino acids, or alkalis/acids having hygroscopic property or salts thereof can be mentioned.
• the amino acids include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine, and tryptophan.
• alkalis/acids having hygroscopic property or salts thereof examples include pantetheine-S-sulfonate, trimethylglycine, betain, pyrophosphoric acid, sodium pyrophosphate, chondroitin sulfate, potassium pyrophosphate, hyaluronic acid, sodium hyaluronate, sodium metaphosphate, potassium polyphosphate, sodium pyrrolidone carboxylate, sodium lactate, sodium chloride, calcium chloride, sodium alginate, and sodium polyacrylate. These may be used singly alone or in combination of two or more kinds thereof.
• a component (B) is at least one kind selected from a straight chain alcohol and a straight chain fatty acid.
• paper which has a unique texture when the paper is pressed strongly against the skin as in the case of blowing the nose or the like, that is, a slippery feeling that is specifically developed when pressure is applied on the paper, suppresses the absorption and desorption of moisture even under the environment of high humidity or low humidity, and retains the sense of use, the moist feeling, and the softness, can be obtained.
• the orientation of the component (B) having a straight chain and polarity in a treatment agent applied onto paper may be involved in these effects.
• the component (B) has a thickening effect when mixed in a polyhydric alcohol such as glycerin, but by being used in combination with an anionic surfactant of a component (C), an agent having low viscosity and high stability, and capable of performing uniform application on paper can be obtained, and the unique texture of paper when the paper is pressed strongly against the skin, and the effect of suppressing the absorption and desorption of moisture of paper under the environment of high humidity or low humidity are developed.
• a polyhydric alcohol such as glycerin
• the number of carbon atoms in each of the straight chain alcohol and straight chain fatty acid of a component (B) is not particularly limited, and is, for example, 4 to 30.
• straight chain alcohol examples include butanol (4:0), pentanol (5:0), hexanol (6:0), heptanol (7:0), octanol (8:0), nonanol (9:0), decanol (10:0), lauryl alcohol (12:0), tridecyl alcohol (13:0), myristyl alcohol (14:0), pentadecyl alcohol (15:0), cetyl alcohol (16:0), palmitoleyl alcohol (16:1), stearyl alcohol (18:0), oleyl alcohol (18:1), linoleyl alcohol (18:2), linolenyl alcohol (18:3), arachidyl alcohol (20:0), behenyl alcohol (22:0), and lignoceryl alcohol (24:0).
• cetylstearyl alcohol which is a mixture of approximately equal amounts of cetyl alcohol and stearyl alcohol, may be used.
• straight chain fatty acid examples include butyric acid (4:0), valeric acid (5:0), caproic acid (6:0), caprylic acid (8:0), pelargonic acid (9:0), capric acid (10:0), lauric acid (12:0), myristic acid (14:0), palmitic acid (16:0), palmitoleic acid (16:1), hiragonic acid (16:3), stearic acid (18:0), oleic acid (18:1), linoleic acid (18:2), linolenic acid (18:3), arachidic acid (20:0), behenic acid (22:0), erucic acid (22:1), lignoceric acid (24:0), selacholeic acid (24:1), cerotic acid (26:0), montanic acid (28:0), and melissic acid (30:0).
• the expression inside the parentheses indicates the same as the above. These may be used singly alone or in combination of two or more kinds thereof.
• the aliphatic group of a component (B) may be a saturated aliphatic group having no double bond or an unsaturated aliphatic group having a double bond, and in consideration of the unique texture of paper when the paper is pressed strongly against the skin and the suppression of absorption and desorption of moisture of paper under the environment of high humidity or low humidity, the aliphatic group is preferably a saturated aliphatic group.
• the component (B) is preferably to be a straight chain higher alcohol or a straight chain higher fatty acid.
• higher alcohol and “higher fatty acid” means an alcohol having 12 or more carbon atoms and a fatty acid having 12 or more carbon atoms, respectively in the present invention.
• the number of carbon atoms of the component (B) is preferably 12 to 22, more preferably 14 to 20, and most preferably 16 to 18. If the number of carbon atoms is 12 or more, there is no concern of an odor, and the effect of suppressing the absorption and desorption of moisture is also improved. If the number of carbon atoms is 22 or less, it is suitable in view of economical practicality and in that the texture of paper is less likely to be hardened.
• straight chain alcohol and the straight chain fatty acid in consideration of the uniform application on paper of paper treatment agent being involved in the development of the texture of paper and the suppression of absorption and desorption of moisture of paper, and the viscosity of agent being involved in the stable and easy operability, a straight chain higher alcohol is preferred, and in particular, cetylstearyl alcohol is more preferred.
• the transfer is ease and the handling ability is favorable, the control of the amount of the treatment agent to adhere to coated paper is easy, and the operability is favorable. Therefore, it is required to avoid the deterioration in the operability due to the increase in the viscosity.
• Addition of water-soluble wax, a water-soluble polymer, a gelling agent, and the like tends to cause the deterioration in the operability due to the increase in the viscosity, however, the paper treatment agent according to the present invention in which a component (B) and a component (C) have been mixed in combination enables stable and easy operation.
• the paper treatment agent according to the present invention may contain at least one kind (B') selected from a branched alcohol, and a branched fatty acid, and in that case, the mass ratio (B'/B) of the component (B') to the component (B) is less than 1, preferably 0.8 or less, more preferably 0.5 or less, furthermore preferably 0.1 or less, and most preferably 0.05 or less.
• the number of carbon atoms of the component (B') is 6 or more, and particularly 8 to 22, and the number of carbon atoms of the branched chain is, for example, 1 to 10.
• the branched alcohol and the branched fatty acid of the component (B') are ordinary a monohydric alcohol and a monohydric fatty acid, respectively.
• Examples of the branched alcohol of the component (B') include 2-methyl-hexyl alcohol, 5-methyl-hexyl alcohol, 2-methyl-heptyl alcohol, 6-methyl-heptyl alcohol, 2-methyl-octyl alcohol, 7-methyl-octyl alcohol, 2-methyl-nonanol, 8-methyl-nonanol, 2-methyl-decyl alcohol, 9-methyl-decyl alcohol, 2-methyl-undecyl alcohol, 10-methyl-undecyl alcohol, 2-methyl-dodecyl alcohol, 2-hexyl-dodecyl alcohol, 11-methyl-dodecyl alcohol, 2-4-6-8-tetramethyl-nonanol, 5-methylhexanol, 2-methyl-pentadecyl alcohol, 14-methyl-pentadecyl alcohol, 2-methyl-heptadecyl alcohol, 2-heptyl-undecyl alcohol, 2-octyl-decyl alcohol, 16
• the content of the component (B) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, furthermore preferably 0.2% by mass or more, and particularly preferably 0.4% by mass or more, relative to the whole amount of the treatment agent except for water. Further, in consideration of the overall development of respective effects including operability, the content of the component (B) is preferably 20% by mass or less, more preferably 15% by mass or less, and furthermore preferably 10% by mass or less, relative to the whole amount of the treatment agent except for water.
• the content of the component (B) is particularly preferably 0.2% by mass or more, and in particular, most preferably 0.4% by mass or more, relative to the whole amount of the treatment agent except for water. From the viewpoint of suppressing the absorption and desorption of moisture of paper under the environment of high humidity or low humidity, the content of the component (B) is most preferably 0.4% by mass or more.
• the paper treatment agent according to the present invention even if a component (B), which has a thickening effect when mixed in a polyhydric alcohol such as glycerin, is mixed in an anionic surfactant of component (C), an agent that has low viscosity and high stability, and capable of performing uniform application on paper can be obtained, and the unique texture of paper when the paper is pressed strongly against the skin due to the action of the component (B) and the effect of suppressing the absorption and desorption of moisture of paper under the environment of high humidity or low humidity can be developed. Further, the softness of paper, and the uniform application on paper of paper treatment agent being involved in the development of the texture of paper and the suppression of absorption and desorption of moisture of paper become favorable.
• anionic surfactant it is not particularly limited, and an anionic surfactant of a phosphoric acid ester salt type, a sulfonic acid salt type, a sulfuric ester salt type, a carboxylic acid salt type, or the like can be used. These may be used singly alone or in combination of two or more kinds thereof.
• anionic surfactant of a phosphoric acid ester salt type examples include alkyl phosphate, alkylaryl ether phosphate, fatty acid amide ether phosphate, and polyoxyalkylene alkyl ether phosphate.
• anionic surfactant of a sulfonic acid salt type examples include alkane sulfonate, ⁇ -olefin sulfonate, ⁇ -sulfo fatty acid methyl ester salt, acyl isethionate, alkyl glycidyl ether sulfonate, alkyl sulfosuccinate, polyoxyalkylene alkyl sulfosuccinate, alkyl benzene sulfonate, alkyl naphthalene sulfonate, N-acyl methyl taurate, formalin condensation sulfonate, paraffin sulfonate, alkyl amide sulfonate, alkenyl amide sulfonate, alkyl glyceryl ether sulfonate, and alkyl aryl ether sulfonate.
• anionic surfactant of a sulfuric ester salt type examples include alkyl sulfate, alkenyl sulfate, alkyl ether sulfate, alkenyl ether sulfate, polyoxyalkylene alkyl ether sulfate, alkyl aryl ether sulfate, fatty acid alkanolamide sulfate, fatty acid monoglyceride sulfate, polyoxyalkylene aliphatic amide ether sulfate, alkyl glyceryl ether sulfate, and sulfated fatty acid alkyl ester.
• anionic surfactant of a carboxylic acid salt type examples include fatty acid soap, alkyl ether carboxylate, alkylene alkyl ether carboxylate, fatty acid amide ether carboxylate, acyl lactate, N-acyl glutamate, N-acylalanine salt, N-acyl sarcosine salt, N-acyl- ⁇ -amino acid salt, alkyl sulfoacetate, alkenyl sulfoacetate, alkenyl succinate, rosinate, and naphthenate.
• the content of the component (C) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, furthermore preferably 0.2% by mass or more, and particularly preferably 1.2% by mass or more, relative to the whole amount of the treatment agent except for water. Further, the content of the component (C) is preferably 25% by mass or less, more preferably 22.5% by mass or less, and furthermore preferably 19% by mass or less, relative to the whole amount of the treatment agent except for water. From the viewpoint of the softness of paper, the content of the component (C) is most preferably 1.2% by mass or more relative to the whole amount of the treatment agent except for water.
• the content of the component (B) is 0.2 to 20% by mass, and the content of the component (C) is 0.2 to 22.5% by mass, relative to the whole amount of the treatment agent except for water.
• the mass ratio (B/C) of the component (B) to the component (C) is preferably 0.05 to 5.
• the mass ratio (B/C) of the component (B) to the component (C) is preferably 0.33 or less.
• the mass ratio (B/C) of the component (B) to the component (C) is 0.33 or less, and further the content of the component (C) is 1.2% by mass or more relative to the whole amount of the treatment agent except for water.
• the mass ratio (B/C) of the component (B) to the component (C) is 0.33 or less, and further the content of the component (A) is 90% by mass or more relative to the whole amount of the treatment agent except for water.
• other components except for the above components can be added as raw materials into a paper treatment agent within the range not impairing the effects of the present invention.
• other components it is not particularly limited, and examples of such other components include water, a nonionic surfactant, a cationic surfactant, an amphoteric surfactant, an oily component, a thickening agent, an antifungal agent, an antiseptic agent, an antifoaming agent, a fragrance, pigments, a pH adjusting agent, extracts, an antioxidant, an anti-inflammatory agent, an inorganic mineral, an inorganic salt, and a water-soluble polymer.
• the amount of the water to be added is not particularly limited, and is preferably added so that the water content in a paper treatment agent is 1 to 30% by mass, more preferably added so that the water content in a paper treatment agent is 3 to 25% by mass, and furthermore preferably added so that the water content in a paper treatment agent is 5 to 20% by mass.
• nonionic surfactant examples include a sorbitan fatty acid ester, a polyoxyethylene sorbitan fatty acid ester, a polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, a polyoxyethylene hydrogenated castor oil fatty acid ester, a castor oil fatty acid ester, a hydrogenated castor oil fatty acid ester, an ethylene glycol fatty acid ester, a sucrose fatty acid ester, a glycerin fatty acid ester, a diglycerin fatty acid ester, a polyglycerin fatty acid ester, an organic acid monoglyceride, a polyethylene glycol fatty acid monoethanolamide, a propylene glycol fatty acid ester, a polyoxyethylene lanolin alcohol ether, a polyoxyethylene alkyl ether, a lauric acid alkanolamide, a polyoxyethylene glycerin fatty acid ester, a polyoxyethylene hydrogenated
• cationic surfactant examples include a quaternary ammonium salt such as a monoalkyltrimethylammonium salt, a dialkyldimethylammonium salt, N,N-dialkyloyloxyethyl-N-methyl, an N-hydroxyethylammonium salt, or a stearyl dimethyl benzyl ammonium salt, an alkylpyridinium salt, and an alkyl amine salt.
• quaternary ammonium salt such as a monoalkyltrimethylammonium salt, a dialkyldimethylammonium salt, N,N-dialkyloyloxyethyl-N-methyl, an N-hydroxyethylammonium salt, or a stearyl dimethyl benzyl ammonium salt, an alkylpyridinium salt, and an alkyl amine salt.
• amphoteric surfactant examples include alkylbetaine, fatty acid amide propyl betaine, lauryl hydroxy sulfobetaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lecithin, hydrogenated lecithin, alkyloxy hydroxypropyl arginine hydrochloride, lauryl hydroxysultaine, lauriminodipropionic acid, sodium undecyl hydroxyethyl imidazolinium betaine, sodium laurylaminodiacetate, lauryl dimethylamino acetic acid betaine, N-[3-alkyloxy-2-hydroxypropyl]-L-arginine hydrochloride, alkyl hydroxy sulfobetaine, alkyl dimethylamine oxide, sodium alkylaminodipropionate, dihydroxyalkyl methylglycine, and sodium lauryldiaminoethylglycinate.
• oily component examples include hydrocarbons such as solid paraffin, and liquid paraffin, fats and oils, esters, silicone oils, waxes, and steroids. These may be used singly alone or in combination of two or more kinds thereof.
• the paper treatment agent according to the present invention can be produced by mixing respective raw materials uniformly with each other in accordance with a conventional method, and for example, can be obtained by stirring and mixing respective raw materials with each other at a temperature at which the raw materials are dissolved.
• a component (B) may be uniformly mixed by a component (C) into a component (A), and the paper treatment agent may be in a state in which a component (B) and a component (C) are dissolved, solubilized, emulsified, or dispersed in a component (A) being a main component.
• the texture of the paper can be improved.
• a slippery feeling of paper that is developed by pressure on the paper is improved.
• Examples of the paper include tissue paper, toilet paper, facial tissue, pocket tissue, a paper handkerchief, and a paper towel.
• the basis weight of paper is preferably 1 to 50 g/m 3 , and more preferably 5 to 20 g/m 3 .
• the ply number (the number of base paper layers) is preferably 1 to 5, and more preferably 2 to 3.
• a method for applying a paper treatment agent onto paper can be mentioned.
• a paper treatment agent onto paper for example, transcription, spraying, or the like can be mentioned.
• a system for applying a paper treatment agent onto paper by these methods for example, a flexographic printing system, a gravure printing system, a spray system, a rotor dampening system, or the like can be mentioned.
• a flexographic printing system a flexographic printing machine that is one of letterpress printing machines is used, and a paper treatment agent is transferred onto paper by a roller equipped with a machine plate made of rubber or synthetic resin whose surface has been engraved.
• a gravure printing machine that is one of intaglio printing machines is used, and a paper treatment agent is transferred onto paper by a roller equipped with a cylinder made of metal whose surface has been subjected to plate-making.
• a paper treatment agent is sprayed onto paper in the form of a mist from a nozzle by compressed air.
• a rotor dampening system a paper treatment agent is sprayed onto paper in the form of a mist by a disk rotating at a high speed.
• the amount of a paper treatment agent to be applied onto paper is preferably 1 to 7 g/m 2 , and more preferably 1.5 to 6 g/m 2 .
• a paper treatment agent was prepared according to the following procedures.
• Respective compounding raw materials were charged into a beaker in the amounts described in Tables 1 to 3, and stirred and mixed with each other at a temperature at which the raw materials were dissolved, and thus a paper treatment agent was prepared.
• the amounts of the components to be mixed which are shown in Tables 1 to 3, indicate the amounts except for water when the raw materials contain water.
• the content of water indicates the water content (% by mass) in the paper treatment agent.
• a treating liquid that the amounts of the component except for water is 25% by mass was prepared by dissolving in water the paper treatment agent obtained by the method described above.
• Each of the treating liquids was uniformly sprayed so that the component except for water of treatment agent was 25% by mass ⁇ 3% on both surfaces of dry tissue (having the ply number of 2, and a basis weight of (12 to 13) g/m 2 ), and coated paper of each of Examples 1 to 22 and Comparative Examples 1 to 11 was prepared. After that, the coated paper was air dried for 3 hours, left to stand in a constant temperature and humidity chamber (having a temperature of 25°C and at a humidity of 40% R.H.) until the moisture content reached equilibrium, and then the obtained coated paper was subjected to evaluation.
• coated paper prepared in a similar manner as in the case of the coated paper used for the measurement of MIU difference described later was evaluated as a score of any one of 1 to 3 by 10 skilled panelists on the basis of the following evaluation point, and by using the average value, the evaluation was performed on the basis of the following criteria.
• KES-SE-SR-U manufactured by KATO TECH CO., LTD.
• the MIU was determined by tracing the surface of one set (two sheets) of coated paper with a friction element.
• the load and the moving speed of the friction element were 25 g and 10 mm/sec, and 50 g and 1 mm/sec, evaluation for the unique slippery feeling of paper was performed.
• the MIU average friction coefficient
• the MMD average deviation of friction coefficient
• the MIU is an average value of friction coefficient ⁇ , and is correlated with the slipperiness and slip resistance of paper, which are felt when the surface is rubbed, and as the value of MIU is smaller, the paper becomes easier to slip.
• the MMD is a degree of fluctuation, that is, how much from the MIU the values fluctuate in the process of tracing the surface of coated paper with a friction element, and is correlated with the smoothness and roughness of paper, which are felt when the surface is rubbed, and as the value of MMD is smaller, the surface becomes smoother and less rough. As the difference between the MIU values under the condition of light touch and the condition of strong touch is larger, the paper has a more unique slippery feeling.
• Example 11 and Comparative Example 5 which are each an index of "smoothness” of paper, were equivalent to each other, but the difference in MIU that is an index of "unique slippery feeling” of paper was largely different. According to this, it has been confirmed that the slippery feeling of paper to be developed by pressure on the paper, which is a "unique slippery feeling", is different from a "slippery feeling" or "smoothness".
• the evaluation was performed by the average value of 10 panelists under similar conditions as those of the above-described "slippery feeling to be developed by pressure (sensory evaluation)" except that the evaluation point and evaluation criteria were as follows.
• the evaluation was performed by the average value of 10 panelists under similar conditions and criteria as those of the above-described "slippery feeling developed by pressure (sensory evaluation)" except that the evaluation point was as follows.
• the suppression of moisture desorption was evaluated by the change in the water content ratio between the coated paper immediately after the start of the step of moisture desorption and the coated paper 4 hours after the start of the step of moisture desorption. If the decrease in moisture is slow in the step of moisture absorption or in the step of moisture desorption, there is an effect of suppressing absorption and desorption of moisture.
• the viscosity was measured at 60 rpm and 40°C by using a Brookfield viscometer, and evaluated on the basis of the following criteria.
• the coated paper was evaluated as a score of any one of 1 to 3 by 10 skilled panelists on the basis of the following evaluation point, and by using the average value, the evaluation was performed on the basis of the following criteria.
• the symbol ⁇ cannot be said to be not necessarily desirable in view of solving problems, and in particular, in a case where all of the three of "slippery feeling to be developed by pressure", the "suppression of moisture absorption”, and “suppression of absorption and desorption of moisture” are not any of the symbols ⁇ +, ⁇ , and ⁇ , it was determined to be improper in view of solving problems. In a case where the symbol ⁇ is included even in one of the respective items, it was determined to be improper in view of solving problems.
• Adhesion amount (% by mass) Condition of light touch Condition of strong touch Difference between measurement values under both conditions Standard condition Sensory evaluation 25 g, 10 mm/sec 50 g, 1 mm/sec 25 g, 1 mm/sec Slippery feeling to be developed by pressure Slippery feeling Smoothness MIU value MMD value MIU value MMD value MIU value difference MMD value difference MMD value MMD value Example 11 23.7 0.213 0.0083 0.189 0.0047 0.024 0.0043 0.206 0.0051 ⁇ ⁇ ⁇ Comparative Example 4 23.8 0.213 0.0080 0.223 0.0062 -0.009 0.0032 0.211 0.0062 ⁇ ⁇ ⁇ Comparative Example 5 25.4 0.260 0.0093 0.266 0.0049 -0.006 0.0042 0.239 0.0055 ⁇ ⁇ ⁇ ⁇
• Example 18 the component (A) was changed from glycerin of Example 11 to sorbitol in the same amount as that of the glycerin of Example 11.
• the "slippery feeling to be developed by pressure”, the “suppression of absorption and desorption of moisture”, and the “uniform application” in Example 18 were equivalent to those in a case of the glycerin, and the “operability (viscosity)", and the “softness” were favorable in a case of the glycerin among the components (A).
• Example 13 the composition was set similar to that in Example 12 except that the component (B) was changed from cetylstearyl alcohol of Example 12 to stearic acid.
• the "slippery feeling to be developed by pressure”, the “suppression of absorption and desorption of moisture”, and the “softness” in Example 13 were equivalent to those in Example 12, and the “uniform application”, and the “operability (viscosity)” were more favorable in Example 12 using cetylstearyl alcohol.
• Example 14 the composition was set similar to that in Example 11 except that the component (B) was changed from cetylstearyl alcohol in Example 11 to stearyl alcohol, and a nonionic surfactant was mixed.
• the "slippery feeling to be developed by pressure”, the “suppression of absorption and desorption of moisture”, and the “softness” in Example 14 were equivalent to those in Example 11, and the “uniform application", and the “operability (viscosity)” were more favorable in Example 11 using cetylstearyl alcohol.
• Examples 1 to 12 mainly, the contents of the component (B) and the component (C), and the ratio of the component (B) to the component (C) were changed.
• Example 9 From the comparison among Example 9, Examples 2, 5, and 7, and Example 12, if the content of the component (B) is 0.2% by mass or more, and further 0.4% by mass or more, relative to the whole amount of the treatment agent except for water, the "slippery feeling to be developed by pressure" becomes more remarkable. If the content of the component (B) is 0.4% by mass or more, the “suppression of absorption and desorption of moisture" becomes more remarkable.
• Example 9 From the comparison between Example 9 and Examples 1 to 8, and 10 to 12, if the content of the component (B) is 0.2 to 20% by mass, and the content of the component (C) is 0.2 to 22.5% by mass, relative to the whole amount of the treatment agent except for water, the overall evaluation for respective items is more remarkably improved.
• Comparative Examples 1 to 5 formulation in which the component (A) and the component (C) had been mixed, but mainly the component (B) has not been mixed was adopted.
• a branched alcohol (B') had been mixed in place of the component (B), but the "slippery feeling to be developed by pressure” and “suppression of absorption and desorption of moisture” as in those in Examples 1 to 22 in which a straight chain alcohol or a straight chain fatty acid had been mixed as the component (B) were not obtained.
• Example 22 In Comparative Example 2, a straight chain alcohol (B) and a branched alcohol (B') had been mixed at a mass ratio of 1 : 1, but similarly, the "slippery feeling to be developed by pressure" and the "suppression of absorption and desorption of moisture" were not obtained.
• a straight chain higher alcohol (B) and a branched alcohol (B') were mixed so that the mass ratio (B'/B) was less than 1.
• Example 22 is compared with Example 2 in which the same kind and same amount of components (A) and (C) had been mixed as those in Example 22, and further the component (B) had been only mixed, the "slippery feeling to be developed by pressure” showed a decreasing tendency, but was within the acceptable range.
• Comparative Example 8 liquid paraffin of oil component and water-soluble wax had been mixed, although the softness was improved, the other items were similar to those in Comparative Examples 6, 7, and 9. In a case of the composition in which water-soluble wax having high viscosity had been used, improvement in the "uniform application” and the "operability (viscosity)" was not observed.
• Comparative Examples 10 and 11 a cationic surfactant, or a cationic surfactant and a nonionic surfactant had been mixed in place of the component (C), and when compared with Comparative Examples 6 to 9, although there is a tendency of improvement in the overall respective evaluations, evaluations as ⁇ , ⁇ , and ⁇ +, which were observed in overall Examples 1 to 22, were not obtained.

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